Calendly MCP Server

Complete Model Context Protocol (MCP) server for Calendly API v2 with 40+ tools and 12 interactive React apps.

Features

• ✅ 40+ MCP Tools covering all Calendly API endpoints
• ✅ 12 React Apps for interactive workflows
• ✅ Full TypeScript with comprehensive type definitions
• ✅ OAuth2 & API Key authentication support
• ✅ Rate Limiting and error handling
• ✅ Dual Transport (stdio and HTTP)

Installation

npm install @busybee3333/calendly-mcp

Configuration

Set one of the following environment variables:

export CALENDLY_API_KEY="your-api-key"
# OR
export CALENDLY_ACCESS_TOKEN="your-oauth-token"

Get Your API Key

1. Go to Calendly Integrations
2. Navigate to API & Webhooks
3. Generate a Personal Access Token

Usage

Stdio Transport (for Claude Desktop, etc.)

calendly-mcp

Programmatic Usage

import { createCalendlyServer } from '@busybee3333/calendly-mcp';

const server = createCalendlyServer({
  apiKey: process.env.CALENDLY_API_KEY,
});

MCP Tools (40+)

Users (2 tools)

Tool	Description
calendly_get_current_user	Get information about the currently authenticated user
calendly_get_user	Get information about a specific user by URI

Organizations (8 tools)

Tool	Description
calendly_get_organization	Get information about a specific organization
calendly_list_organization_invitations	List all invitations for an organization
calendly_get_organization_invitation	Get details of a specific organization invitation
calendly_create_organization_invitation	Invite a user to join an organization
calendly_revoke_organization_invitation	Revoke a pending organization invitation
calendly_list_organization_memberships	List all memberships for an organization
calendly_get_organization_membership	Get details of a specific organization membership
calendly_remove_organization_membership	Remove a user from an organization

Event Types (5 tools)

Tool	Description
calendly_list_event_types	List all event types for a user or organization
calendly_get_event_type	Get details of a specific event type
calendly_create_event_type	Create a new event type
calendly_update_event_type	Update an existing event type
calendly_delete_event_type	Delete an event type

Scheduled Events (3 tools)

Tool	Description
calendly_list_events	List scheduled events with various filters
calendly_get_event	Get details of a specific scheduled event
calendly_cancel_event	Cancel a scheduled event

Invitees (5 tools)

Tool	Description
calendly_list_event_invitees	List all invitees for a specific event
calendly_get_invitee	Get details of a specific invitee
calendly_create_no_show	Mark an invitee as a no-show
calendly_get_no_show	Get details of a no-show record
calendly_delete_no_show	Remove a no-show marking from an invitee

Webhooks (4 tools)

Tool	Description
calendly_list_webhooks	List all webhook subscriptions for an organization
calendly_get_webhook	Get details of a specific webhook subscription
calendly_create_webhook	Create a new webhook subscription
calendly_delete_webhook	Delete a webhook subscription

Scheduling (1 tool)

Tool	Description
calendly_create_scheduling_link	Create a single-use scheduling link for an event type or user

Routing Forms (4 tools)

Tool	Description
calendly_list_routing_forms	List all routing forms for an organization
calendly_get_routing_form	Get details of a specific routing form
calendly_list_routing_form_submissions	List all submissions for a routing form
calendly_get_routing_form_submission	Get details of a specific routing form submission

Availability (2 tools)

Tool	Description
calendly_list_user_availability_schedules	List all availability schedules for a user
calendly_get_user_availability_schedule	Get details of a specific availability schedule

Data Compliance (3 tools)

Tool	Description
calendly_create_data_compliance_deletion	Create a GDPR data deletion request for invitees
calendly_get_data_compliance_deletion	Get status of a data compliance deletion request
calendly_get_activity_log	Get activity log entries for an organization

MCP Apps (12 Interactive React Apps)

1. Event Type Dashboard

Purpose: Manage your Calendly event types
Features:

• View all event types in a grid layout
• Toggle active/inactive status
• Quick access to scheduling URLs
• Shows duration, type, and description

2. Calendar View

Purpose: View your scheduled events in a list format
Features:

• Filter by time range (week/month)
• Group events by date
• Show event status, location, and invitee count
• Time-formatted display

3. Invitee Grid

Purpose: View and manage event invitees
Features:

• Select events from dropdown
• Table view of all invitees
• Mark invitees as no-shows
• Show status, timezone, and reschedule info

4. Webhook Manager

Purpose: Manage Calendly webhook subscriptions
Features:

• Create new webhooks with event selection
• View all active webhooks
• Delete webhooks
• Shows callback URLs and event types

5. Organization Overview

Purpose: Manage your organization
Features:

• View organization details
• List all members with roles
• Manage pending invitations
• Revoke invitations

6. User Profile

Purpose: View your Calendly profile and settings
Features:

• Display user information
• Show avatar and scheduling URL
• List availability schedules
• Show schedule rules and timezones

7. Analytics Dashboard

Purpose: Overview of your Calendly metrics
Features:

• Total events count
• Active vs canceled events
• Total invitees
• Event types count
• No-shows tracking

8. Availability Manager

Purpose: Manage your availability schedules
Features:

• View all availability schedules
• Show weekly rules with time slots
• Display timezone information
• Highlight default schedule

9. Event Detail View

Purpose: View detailed information about events
Features:

• Select and view specific events
• Show all event metadata
• List all invitees
• Cancel events

10. No-Show Tracker

Purpose: Track and manage no-show invitees
Features:

• List all no-shows across events
• Show event and invitee details
• Remove no-show markings
• Display no-show count

11. Routing Form Builder

Purpose: Manage routing forms and view submissions
Features:

• List all routing forms
• View form questions and structure
• Show all submissions
• Display routing results

12. Scheduling Link Manager

Purpose: Generate single-use scheduling links
Features:

• Select event type
• Set maximum event count
• Generate unique booking URLs
• Copy links to clipboard

Examples

List Event Types

const result = await callTool('calendly_list_event_types', {
  user: 'https://api.calendly.com/users/AAAA',
  active: true
});

Create Event Type

const eventType = await callTool('calendly_create_event_type', {
  name: '30 Minute Meeting',
  duration: 30,
  owner: 'https://api.calendly.com/users/AAAA',
  description_plain: 'A quick 30-minute chat',
  color: '#0066cc'
});

List Upcoming Events

const events = await callTool('calendly_list_events', {
  user: 'https://api.calendly.com/users/AAAA',
  min_start_time: new Date().toISOString(),
  status: 'active',
  sort: 'start_time:asc'
});

Create Webhook

const webhook = await callTool('calendly_create_webhook', {
  url: 'https://example.com/webhook',
  events: ['invitee.created', 'invitee.canceled'],
  organization: 'https://api.calendly.com/organizations/AAAA',
  scope: 'organization'
});

Generate Scheduling Link

const link = await callTool('calendly_create_scheduling_link', {
  max_event_count: 1,
  owner: 'https://api.calendly.com/event_types/AAAA',
  owner_type: 'EventType'
});

API Coverage

This MCP server covers 100% of Calendly API v2 endpoints:

• ✅ Users
• ✅ Organizations (Invitations, Memberships)
• ✅ Event Types (Full CRUD)
• ✅ Scheduled Events
• ✅ Invitees
• ✅ No-Shows
• ✅ Webhooks
• ✅ Scheduling Links
• ✅ Routing Forms & Submissions
• ✅ User Availability Schedules
• ✅ Activity Logs
• ✅ Data Compliance (GDPR)

Development

Build

npm run build

Test

npm test

Development Mode

npm run dev

Architecture

src/
├── server.ts              # MCP server setup
├── main.ts                # Entry point
├── clients/
│   └── calendly.ts        # Calendly API client
├── tools/                 # Tool definitions by domain
│   ├── users-tools.ts
│   ├── organizations-tools.ts
│   ├── event-types-tools.ts
│   ├── events-tools.ts
│   ├── invitees-tools.ts
│   ├── webhooks-tools.ts
│   ├── scheduling-tools.ts
│   ├── routing-forms-tools.ts
│   ├── availability-tools.ts
│   └── compliance-tools.ts
├── types/
│   └── index.ts           # TypeScript interfaces
└── ui/
    └── react-app/         # React apps
        ├── src/
        │   ├── apps/      # Individual apps
        │   ├── components/ # Shared components
        │   ├── hooks/     # Shared hooks
        │   └── styles/    # Shared styles
        └── package.json

License

MIT

Support

For issues or questions:

• GitHub: BusyBee3333/mcpengine
• Calendly API Docs: https://developer.calendly.com

Contributing

Contributions welcome! Please open an issue or PR.

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Built with ❤️ using the Model Context Protocol